.rotation{
    width: 820px;
    height: 369px;
    background: no-repeat url("../images/tiger.jpg") 0 0;
    background-size:820px 369px ;
    animation: lunbo 10s ease infinite ;
    /*linear*/
    position: relative;
}
.rotation ul{
    padding-left: 675px;
    padding-top: 333px;
    height: 30px;
    width: 140px;
}
.rotation ul li{
    float: left;
    width: 30px;
    height: 30px;
    margin: 0 5px 6px 0;
    font-size: 14px;
    line-height: 30px;
    text-align: center;
    border-radius: 30px;
    background-color: #733f26;
    color: white;
}
.rotation ul li span{
    display: block;
    width: 30px;
    height: 30px;
    font-size: 14px;
    line-height: 30px;
    text-align: center;
    color: #FFFFFF;
    border-radius: 30px;
    background-color: #733f26;
    position: relative;
    z-index: 100;
}
.rotation ul li:hover span{
    background-color: #a67359;
}
.rotation ul li:hover div{
    width: 820px;
    height: 369px;
    background-repeat: no-repeat;
    background-position: 0 0;
    background-size: 820px 369px;
    position: absolute;
    left: 0;
    top: 0;
}
.rotation ul li.lunbo1:hover div{
    background-image: url("../images/owl.jpg");
}
.rotation ul li.lunbo2:hover div{
    background-image: url("../images/乌龟.jpg");
}
.rotation ul li.lunbo3:hover div{
    background-image: url("../images/大熊猫.jpg");
}
.rotation ul li.lunbo4:hover div{
    background-image: url("../images/长颈鹿.jpg");
}
@keyframes lunbo{
    0%{
        background: url("../images/tiger.jpg") no-repeat top left;
        /*background-size: 820px 369px;*/
    }
    25%{
        background: url("../images/owl.jpg") no-repeat top left;
        /*background-size: 820px 369px;*/
    }
    50%{
        background: url("../images/乌龟.jpg") no-repeat top left;
        /*background-size: 820px 369px;*/
    }
    75%{
        background: url("../images/大熊猫.jpg") no-repeat top left;
        /*background-size: 820px 369px;*/
    }
    100%{
        background: url("../images/长颈鹿.jpg") no-repeat top left;
        /*background-size: 820px 369px;*/
    }
}
.rotation img{
    /*width: 410px;*/
    width: 820px;
    height: 125px;
    padding-bottom: 5px;
}